一、问题的提出拟建的阿岗水库,位于滇东黄泥河支流篆长河中段。坝址区处于草北海子背斜的南东翼,岩层主要为阳新灰岩和峨眉山玄武岩,走向北60～80度东,倾向南东(倾向下游),倾角20～30度。坝址区为一峡谷,河流切层发育,构成横向谷。坝址区峡谷上游为草北海子背斜构造溶蚀盆地,地形开阔,是蓄水的良好地形(图1)。 First, the issue proposed Proposed reservoir in Argan, located in the Yellow River tributary of eastern Yunnan Yellow River Changjiang River. The dam site is located in the south-eastern wing of the Hacizi anticline in the Caobei area. The rock formations are mainly Yangxin limestone and Emeishan basalts, which run east 60 to 80 degrees eastward and tend to the east (dip downstream) with dip angles of 20-30 degrees. The dam site area is a canyon, the river layer development, constitutes a horizontal valley. The upper reaches of the canyon in the dam site are the dissolution basins of the Kao Bei Haizi anticline with open terrain and good water storage (Figure 1).